Electricity costs $9.0$ cents/ $\text{kW h}$. Boiling the water in a kettle requires $0.060$ hours and uses $1.2$ cents of electricity. What is the power rating of the kettle?
- A$0.45\,\text{kW}$
- B$0.65\,\text{kW}$
- C$2.2\,\text{kW}$
- D$130\,\text{kW}$
Physics 5054 · O Level · Power